Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Kose, Oguz(5)
- Oktay, Tugrul(5)
- Çam, Handan(4)
- Eroğlu, Hasan(3)
- Aydin, Merve(2)
- Danışmaz, Sibel(2)
- Dogan, Hulya(2)
- Doğan, Ramazan Özgür(2)
- Emir, Sümeyye Nur(2)
- Kulakaç, Nurşen(2)
- Sahin, Ceyda Uzun(2)
- Taş, Ahmet(2)
- Çelik, Kamil(2)
- Akar, Gökhan(1)
- Akar, Tuba(1)
- Aksoy, Fatih(1)
- Akyol, Hikmet(1)
- Altas, Ismail Hakki(1)
- Aslay, Fulya(1)
- Aydin, Musa(1)
- Aydın, Şenay(1)
- Bayraktar Fırıncı, Sümeyye(1)
- Başkan Takaoğlu, Zeynep(1)
- Bekar, Fevziye(1)
- Bendine, K.(1)
- Bora, P.(1)
- Bozkurt, Ferhat(1)
- Cakmak, Recep(1)
- Cengiz, Selim(1)
- Cetin, Gokhan(1)
- Cura, Tunçhan(1)
- Daştan, Abdulkadir(1)
- Demir, Sertac Timur(1)
- Duman, Osman(1)
- Duran, Celal(1)
- Gedikli, Eyup(1)
- Gundogdu, Ali(1)
- Gül, F.(1)
- Günen, Mehmet Akif(1)
- Güngör, Nihan(1)
Yayınlar
- MakaleAçık Erişim2022A Mathematical Model of Susceptible Diabetes Complication (SDC) Model in Discrete Time Fuzzy and Crisp Environment
Merdan, Mehmet; Şişman, Şeyma
In this study, we examined the mathematical model of the discrete-time equation system with susceptible diabetes complication (SDC), which is known to be caused by environmental and genetic factors in a fuzzy environment. From the diabetes complication (DC) model, the susceptible diabetes complication (SDC) model is being developed. It was obtained using definitions of how the behavior of this model changes in a fuzzy environment. A nonlinear differential equation system transforms the sensitive diabetes complication (SDC) model into a discrete time equation system. Stability analysis of the model with jury criterion was examined. In addition, numerical solutions and graphics of the analysis of the discrete model in fuzzy environment are obtained by using the MATLAB package program.
AtıfOpenAlex2
İncele - MakaleAçık Erişim2022Analysing user resistance to distance learning systems by academics within the COVID-19 pandemic using the technology acceptance model
Çam, Handan; Bekar, Fevziye
The aim of this study is to determine academics’ user resistance to distance learning, their perceptions of the distance learning systems and factors affecting their perceptions of the changes in the education system during the COVID-19 pandemic. The study’s population consists of 440 academics working in 43 different universities in Turkey. The research sample were determined through convenience and snowball sampling methods. The data were collected using an online questionnaire form created within Google Forms. After validity and reliability analyses on the data, eight different hypotheses were tested using structural equation analysis. All eight hypotheses proposed within the study were accepted after receiving the results of this analysis. The results of the study show that user resistance has a significantly negative effect on the users that utilise distance learning. However, the perceived ease of use and usefulness have a significantly positive effect on attitude and behavior.
- MakaleYalnız künye2022Aygıt-İnsan, İnsansız-Yaşam: Teknolojinin Gölgesinde Bedenin, Duyuların ve Hafızanın Yeniden-Tasarımı
Demir, Sertac Timur
Bu çalışma tekno-sosyal çağın ilişkilerine olabildiğince gerçekçi perspektiften baktığı varsayılan bilim kurgu türü üzerinden eleştirel bir tartışma yapmayı hedeflemektedir. Bu tartışmanın odağında bedene, hafızaya ve duyulara iyiden iyiye nüfuz eden teknolojik aygıtlar ve onların insani nitelikler üzerindeki dramatik izdüşümleri vardır. Makalenin argümanına göre ayırt etmek, merhamet göstermek, reddetmek, hata yapmak, dalgın olmak, görmezden gelmek ve unutmak gibi insana özgü vasıfların yerini gündelik yaşamı otomasyon kültüründe işleten, sürekli uyanık ve dinamik tekno-sistemler almaktadır. İnsanı mekanik akışa eklemleyen bu kültürde şiddet de sterilize edilmek suretiyle belirsizleştirilmektedir. Aygıtlar insan bedenini çevreleyen dış dünyaya değil; bizatihi bedene entegre ve bilinç dışına dönük şekilde tasarımlanmaktadır. Özgürlük istencini de bulanıklaştıran bu coşkulu ve hızlı eğilim, uyumak dahil neredeyse tüm alışkanlıkları ve ayrıca duyuları —özellikle de gözü— yeniden formüle etmektedir. Bunun sonucunda bir zamanlar tefekkür ve tahayyülün merkezinde olan duyu(ş)lar teknik olarak araçsallaşmakta ve aygıtların hizmetinde pasif eklentiler halini almaktadır. Bu nitel çalışmada söz konusu yaklaşımlar, son yıllarda oldukça popüler olan Black Mirror dizisinin Senin Tüm Geçmişin ve Acımadan Öldürmek bölümleri ışığında sosyolojik film analizi yöntemiyle incelenmektedir. Bu yöntem filmleri sanat alanına temas eden teknik ve estetik unsurlarından ziyade toplumsal yaşamın yansıması, yorumu veya temsili olarak ele almaktadır. Bu makalede odaklanılan iki bölüm de bu açıdan modern kültürün göstergelerinden olan teknolojik inovasyonların özellikle insan bedeni, hafızası ve duyuları üzerindeki belirleyiciliğini tamamlayıcı tavırla izah etmesi bakımından dikkat çekicidir. Çalışmanın teorik çerçevesini ise modern tekno-kültürel değişimi sosyolojik yaklaşımın eleştirel penceresinden analiz eden Günther Anders, Jean Baudrillard, Zygmunt Bauman, Paul Virilio ve Byung-Chul Han gibi düşünürler oluşturmaktadır.
AtıfOpenAlex2TR Dizin2İncele - MakaleAçık Erişim2022Nursing Students the Attitude Towards E-Learning Scale: A Methodological Study
Sahin, Ceyda Uzun; Aydin, Merve; Kulakaç, Nurşen
ABS TRACT Objective: Today, as a result of the constantly developing information and technologies affecting the field of education, the interest and need for e-learning (electronic learning) environment is\rincreasing day by day. Student attitudes in e-learning directly affect the\reffectiveness of learning. The aim of this study was to adapt the “Attitude Towards E-Learning Scale” into Turkish and perform its validity\rand reliability study for nursing students. Material and Methods: This\rstudy, which has a methodological design, was conducted with 200\rnursing students. The data were collected between 15-30 April 2021\rusing the data collection form prepared on Google Forms. The scale\rconsists of 9 items. In the evaluation of the data, content validity, explanatory and confirmatory factor analysis, and internal consistency\ranalysis were performed based on expert opinion. Results: The factor\rloadings of the Attitude Towards E-Learning Scale items for which validity and reliability studies were conducted vary between 0.621 and\r0.859. Cronbach alpha reliability coefficient was found to be 0.913, a\rKaiser-Meyer-Olkin value was 0.911, and Bartlett’s test for sphericity\rwas p<0.001. Factor analysis demonstrated that the scale consisted of\ra single factor and showed a good model fit. The scale explains 60.61%\rof students’ attitudes towards e-learning. In confirmatory factor analysis, fit indices were found to be root mean square error of approximation=0.073, χ2\r/df=2.047, and comparative fit index=0.970, showing that\rthe scale was at a good fit level. Conclusion: The study revealed that\rthe Attitude Towards E-Learning Scale can be used in studies evaluating the “e-learning attitudes” of nursing students. It is thought that repeating this study on e-learning with nursing students with different\rstudent groups will make important contributions to e-learning.
AtıfOpenAlex9TR Dizin6İncele - Derleme MakaleAçık Erişim2022Üç Boyutlu Sanal Ortamlarda Tarih Öğretimi: Sistematik Derleme Çalışması
Aydın, Şenay; Keleş, Esra; Bayraktar Fırıncı, Sümeyye
Bu çalışmanın amacı, 3B sanal ortamlarda tarih öğretimi ile ilgili yapılan araştırmalara ilişkin mevcut durumu ve 3B sanal ortamların tarih öğretimine katkısını ortaya koymaktır. Araştırmada sistematik derleme yöntemi kullanılmıştır. 2000-2020 yılları arasında 3B sanal ortamlarda tarih öğretimi ile ilgili yapılmış araştırmalar, çeşitli veri tabanlarında, “3B sanal dünyalar”, “3B sanal ortamlar”, “tarih eğitimi / sınıfı / tarih öğretimi”, “3B sanal tarih eğitimi” ve “tarihi yeniden canlandırma” Türkçe ve İngilizce anahtar kelimeleri ile taratılmış ve içerikleri kontrol edilerek dahil edilme ve hariç tutulma işlemleri eşliğinde seçilmiştir. Sonuçta araştırmanın konusuna ve amacına uygun olabilecek 6 tam metin bildiri, 7 makale ve 1 tez çalışması tespit edilmiştir. Çalışmaların çoğunluğunda mekân tasarımlarının yanında dönem kıyafetleri ile tasarlanmış karakterlerin, tarihsel bir olayı yeniden canlandırması ele alınmıştır. 3B sanal ortamlarda tarih öğretimi esnasında, ortamla alakalı memnuniyet, öğrenci başarısı gibi değişkenlerin incelendiği ve olumlu sonuçlar alındığı görülmüştür. Bunun yanı sıra, bir ekip ile yürütülen öğretim uygulamalarının çok iyi planlanması gerektiği belirlenmiştir. Araştırma sonucunda, 3B sanal ortamlarda tarih öğretimine ilişkin gelecek araştırmalara yönelik öneriler sunulmuştur.
AtıfOpenAlex2İncele - MakaleAçık Erişim2021Hexarotor Longitudinal Flight Control with Deep Neural Network, PID Algorithm and Morphing
Oktay, Tugrul; Kose, Oguz
Unmanned Aerial Vehicles (UAV) have become an integral part of life, from military operations to entertainment. With this popularity, the interest of researchers on these UAVs has gradually increased. The use of UAVs in many areas and the researches carried out by researchers have revealed the limitations of these devices. At the beginning of these restrictions is the passage through the narrow space. In this study, longitudinal flight control of a hexarotor UAV is discussed with morphing. The limitation of this study is that it is difficult to estimate the moment of inertia and proportional integral derivative (PID) coefficient values according to the arm length, since there is a change in the hexarotor arm lengths with the morphing and the rigid body model changes accordingly. In this study, it is aimed to obtain these parameters with the Deep Neural Network(Artificial Neural Network(ANN) with two or more hidden layers) to overcome this problem. 15 drawings of hexarotor morphing states were drawn in Solidworks program. A training set was created by obtaining the PID coefficients for the longitudinal flight of these drawings from the Matlab/Simulink program. The training set was taught to the Deep Neural Network and moments of inertia and PID coefficients were obtained according to the arbitrarily estimated arm extension or shortening rates. In addition, the hexarotor dynamic model was derived according to the Newton-Euler approach and modeled using the state space model. The longitudinal flight of the hexarotor is simulated with the state space model. The moment of inertia and PID coefficients were estimated by Deep Neural Network according to the values determined by the program randomly together with the initial state. Simulations were made with these parameters and the results were given in graphics.
AtıfOpenAlex15TR Dizin2İncele - Derleme MakaleYalnız künye2021Yeni Bir Sezgisel Optimizasyon: Arama ve Kurtarma Algoritması veFonksiyon Optimizasyon Problemlerinin Çözümü
Özdemir, Muhlis; Cura, Tunçhan
Sezgisel teknikler, doğadan esinlenerek geliştirilmiş optimizasyon teknikleridir. Literatürde birçok sezgisel teknik bulunmakla birlikte, araştırmacılar tarafından doğa tabanlı ya da doğadaki canlı davranışlarının gözlemlenmesi ile her geçen gün yeni bir sezgisel teknik sunulmaktadır. Bu çalışmada, insan davranışlarından esinlenerek geliştirilmiş yeni bir sezgisel optimizasyon tekniği önerilmektedir. Arama ve Kurtarma Optimizasyon Algoritması (AKOA) olarak isimlendirilen bu yöntemin geçerliliğini kanıtlamak adına teknik, literatürde yer alan fonksiyon optimizasyonu test problemlerinin global minimumlarının bulunmasında kullanılmıştır. 21 minimizasyon problemi üzerinde gerçekleştirilen denemeler sonucunda, AKOA’nın Dinamik Rastgele Arama Tekniği ve Rastgele Seçim Yürüyüşü tekniklerine kıyasla oldukça rekabetçi olduğu görülmüştür.
- MakaleAçık Erişim2021The Effect of the Skills Gained by Management Information Systems Education in Meeting the Human Resource Requırements of Technology Development Zones
Çam, Handan; Özen, Üstün; Aslay, Fulya
Within the scope of this study, it is tried to determine which qualifications the enterprises operating in Technology Development Zones seek in individuals who have MIS undergraduate degree. For this purpose, a survey has been conducted with enterprises in Technology Development Zones in Turkey. Descriptive statistical analysis, confirmatory factor analysis and multiple regression analysis were used to analyze the data in the survey. In personal abilities; analytical skills, which are defined as the ability to use logical and scientific approaches and techniques to solve problems, are the most sought after qualifications by companies; however, it is seen that the ability to establish written and verbal communication is especially important in special abilities. As a result of the analyses, it is revealed that the basic knowledge levels that the employees should have are important for the enterprises, especially general and professional English as a foreign language. In addition, it is seen that enterprises prefer employees with social personality who have good communication skills. In addition, 77.2% of the enterprises that participated in the study preferred to employ MIS graduates in their enterprises in future.
AtıfOpenAlex6TR Dizin3İncele - MakaleAçık Erişim2021Examination Of Intent To Continue Using Mobile Shopping Applications In ECommerce: Extended Technology Acceptance Model
Çelik, Kamil; Taş, Ahmet
Consumers widely use mobile shopping applications created within the scope of mobile marketing. In this respect, determining the factors that affect consumers' continued use of mobile shopping applications will enable companies to develop these applications according to the needs of consumers. This study aims to examine the increasingly widespread mobile shopping phenomenon and the factors that motivate consumers to continue using mobile shopping. For this purpose, this study expands the technology acceptance model (TAM) and comprehensively discusses the factors affecting the intention to continue mobile shopping. Factors enabling the use of mobile shopping are perceived ease of use, perceived usefulness, enjoyment, suitability to lifestyle, trust in applications, and attitude towards mobile shopping. In this context, a questionnaire was applied to 699 consumers. The obtained data were analyzed with the structural equation model using the R program. The factors of perceived ease of use, enjoyment, conformity to lifestyle, trust, and social norms have a significant and positive effect on attitude, but perceived usefulness has no significant effect on attitude. In addition, the attitude towards using mobile shopping applications has a significant and positive effect on the willingness to continue using these applications.
AtıfOpenAlex4TR Dizin10İncele - MakaleYalnız künye2021Energy Efficient Driving Optimization of Electrical Vehicles Considering the Road Characteristics
Eroğlu, Hasan; Oğuz, Yasin
Electric vehicles, which are an important part of sustainable energy technologies, occupy an important place in our daily life. More efficient use of electric vehicles will ensure more efficient use of sustainable energy sources. It is not possible for the human brain to determine the most efficient driving characteristics. In this study, energy efficient driving optimization of electric vehicles was realized. Along the route, optimum speeds were determined in terms of energy, by using the road and engine characteristics. Geographical information systems and genetic algorithm have been used effectively in the solution of the problem. The effectiveness of the proposed algorithm was revealed with many test studies. With this study, an algorithm that provides an energy-efficient driving for electrical vehicles was developed. The results will contribute to the development of electric vehicle technologies.
- MakaleAçık Erişim2021Combined Quadrotor Autopilot System and Differential Morphing System Design
Oktay, Tugrul; Kose, Oguz
The aim of this article is to design and model a quadrotor with autopilot system and differential morphing using the Simultaneous Perturbation Stochastic Approximation (SPSA) optimization algorithm. Along with differential morphing, quadrotor modelling and control was also done. Although it is simple in structure, it has a complex structure in terms of model and control. Newton-Euler method was used for the dynamic model. Non-linear motion equations have been converted to linear motion equations. The full quadrotor model was drawn in the Solidworks program. Mass and moment of inertia information was obtained from this model. Simulation model was created by using state space model approach in Matlab / Simulink environment. Proportional integral derivative (PID) algorithm was used as the control structure. Differential morphing and PID coefficients rates were determined with SPSA. With the optimization method, determining the differential morphing rate, PID coefficients and applying it to the quadrotor provides a very innovative method.
AtıfOpenAlex7İncele - MakaleYalnız künye2021Determination of Land Use Change using Support Vector Machines: A Case Study of Arnavutkoy, Istanbul
Çatal Reis, Hatice; Yılancı, Gulsena
As a result of the development of cities and inclination towards urbanization, natural areas decreased while urban areas increased. In this respect, determination of impermeable surfaces is important for the problems covering; effects of urbanization on natural environment, global environmental variation, urban atmospheric process, human activities and the effects of urbanization on the environment. Remote sensing images are used to examine and classify land cover/uses. Traditional classification methods are mainly divided into supervised classification and unsupervised classification. The aim of this study is to classify land cover/use and to state temporal change using the Support Vector Machines (SVM) approach, which is a supervised classification method. Arnavutkoy district of Istanbul was chosen as the study area for land use and change detection analysis. Landsat 5/7/8 satellite images of Arnavutkoy district were obtained and SVM process was applied to obtain these images. Firstly, four classes were created for each image: urban areas, vegetation, bare soils and wetlands SVM was applied and accuracy analysis was performed to the images classes of which were created before. CAD software and GIS software were used for image processing. The classification accuracy for SVM was found to be 98.66%, 98.31%, 98.95%, 97.99%, 96.37%, 97.90% (from 1995 to 2019). In addition, ROC analysis was used for comparison of accuracy analysis. As a result of this study, land cover/use change of Arnavutkoy district in the last 20 years has been determined. The urban area of the district was 40.99 km2in 1995 and 93.76 km2in 2019. In addition, the impact of the Europe's largest airport on land cover / use has been examined. The results showed that the accuracy of using SVM to classify land use/cover is high. Therefore, it has been proposed that this algorithm is used as an optimal classifier for land use/cover maps.
AtıfTR Dizin1İncele - MakaleYalnız künye2021A Course Timetabling Formulation under Circumstances of Online Education
Şimşek, Ahmet Bahadır
This study addresses the adaptation of the course timetabling problem to the online education system forced by the Covid-19 pandemic. The seating capacity constraint that shapes the timetabling decision in online education conditions loses its validity. It is replaced by a bandwidth constraint that restricts the number of instantaneous connections. Overlapping courses in the same time slot increase the number of instant connections and excessive connections cause technical problems. Bandwidth constraint requires the distribution of total connection in a day over all time slots. However, while this is achieved, the time slots should be allocated fairly to the departments. In this study, a multi-objective mathematical model is proposed that distributes the courses fairly on the day and time slot axis and distributes the total number of connections to time slots in each day as equally as possible. The model adopts the maximum difference minimizing approach and requires solving the objectives sequentially according to the order of them.The model was tested with the real data of the 2020-2021 fall semester of a 7 department faculty. The model has 12084 decision variables and 15567 constraints and an optimal solution gets in approximately 28 minutes. Results were compared with a decentralized and manually prepared timetable. The comparison shows that the model is superior to the manual timetable in the distribution of courses across the day and time slot. Also, the model can reduce the number of students in the peak time slot by 22% compared to manual scheduling.
AtıfTR Dizin3İncele - MakaleAçık Erişim2020Investigation of the Effect of Differential Morphing on Lateral Flight by Using PID Algorithm in Quadrotors
Oktay, Tugrul; Kose, Oguz
Quadrotor is unmanned aerial vehicles that are widely used in military and civil fields. Quadrotors differ from conventionalhelicopters, which use rotors that are able to vary the pitch of their blades dynamically as they move around the rotor hub. Quadrotorsgenerally use two pairs of identical fixed pitch propellers; two clockwise (CW) and two counterclockwise (CCW). These useindependent variation of the speed of each rotor to achieve control. In this study, the quadrotor lateral flight and the effect ofmorphing on this flight were investigated. Morphing is called the change of unmanned aerial vehicles in their geometry. NewtonEuler method is used to create the quadrotor model. However, since the quadrotor is a system with non-linear dynamics, motionequations are converted to linear equations. The quadrotor full model was drawn in the Solidworks program, including batteries,controllers and propellers, in accordance with its actual dimensions. State space model approach was used in simulations in Matlab /Simulink environment. The value of mass and inertia moments from the Solidworks program is used in the state space model.Proportional integral derivative (PID) was used as the control algorithm. PID is an algorithm widely used in industrial applications.PID is preferred because it is strong, fast and simple. The system to which PID will be applied must be linear. The PID coefficientsKp, Ki and Kd are important for the stable operation of the system. Appropriate values should be chosen. In this study, lateral flightperformance was monitored using differential morphing and PID algorithm and the results were presented.
AtıfOpenAlex9TR Dizin6İncele - MakaleYalnız künye2020Mobil Coğrafi Bilgi Sistemlerinin Kullanımını Etkileyen Faktörlerin Teknoloji Kabul Modeli Çerçevesinde İncelenmesi
Çam, Handan; Zeybek, Halil İbrahim
Yeni teknolojiler kapsamında değerlendirilen mobil coğrafi sistemlerinin tartışıldığı bu çalışmanın amacı; mobil olarak kullanımasunulan CBS uygulamalarının mobil kullanıcılar tarafından nasıl algılandığı ve kullanıcıların kullanım yönündeki algılarını etkileyenfaktörleri belirlemektir. Araştırmanın amacı doğrultusunda çalışmanın anakütlesi TR90 bölgesinde yer alan 6 ilden (Gümüşhane,Giresun, Trabzon, Artvin, Ordu, Rize) oluşmaktadır. Çalışmanın Örneklem kütlesinin belirlenmesinde tabakalama örnekleme yöntemikullanılmıştır. İl bazında %95 güven aralığında e=%5 hata payı ile yapılan tabakalama örnekleme yöntemi sonucunda 200 katılımcıdanoluşan örneklem sayısına ulaşılmıştır. Çalışmanın kapsadığı illerden elde edilen veri seti yapısal eşitlik analiz yöntemi kapsamında vetanımsal istatiksel yöntemler kullanılarak analiz edilmiştir. Amaç kapsamında değişkenleri modele dahil etmeden önce güvenilirlikgeçerlilik analizleri uygulanmıştır. Analizler sonucunda değişkenler 9 faktöre ayrılmıştır. Elde edilen faktörler yapısal eşitlik analizisonucunda 14 farklı hipotezle sınanmıştır. Çalışmada önerilen 14 hipotezin 6 tanesi reddedilmiş 8 tanesi kabul edilmiştir. Mobil coğrafisistemlerin kullanıcılar tarafından benimsenmesi dikkate alındığında, teknolojiden kullanım kolaylığı, fayda, uyum, zaman tasarrufugibi avantajları algılayan kullanıcıların bu teknolojiyi kullanma yönünde eyleme geçebilecekleri tespit edilmiştir.
AtıfTR Dizin2İncele - MakaleAçık Erişim2020İçme suyu arıtma tesisi atık çamuru üzerinemetilen mavisi adsorpsiyonu ve yapay sinir ağlarıile modellenmesi
Öztürk, Nurcan; Senturk, Hasan Basri; Gundogdu, Ali; Duran, Celal
Bu çalışmada içme suyu arıtma tesislerinde arıtım aşamaları sonucu oluşan İçme Suyu Arıtma Tesisi Atık Çamurunun (İSATAÇ), atık sularda organik kökenli bir kirletici (boyar madde) olan Metilen Mavisinin uzaklaştırılmasında adsorban olarak kullanılabilirliği araştırılmıştır. Adsorpsiyon çalışmalarında kullanılan İSATAÇ fiziksel ya da kimyasal ön işleme tabi tutulmamıştır. Öncelikle İSATAÇ’ın nem, yoğunluk, uçucu madde, sabit karbon, kül tayini yanı sıra elementel, SEM, FT-IR, XRD, XRF ve TGA/DTA analiz gibi çeşitli analitik işlemlerle karakterize edilmiştir. Sonrasında adsorpsiyon deneyleri kesikli sistemle gerçekleştirilmiş ve İSATAÇ’ın sulu çözeltiden bu kirletici türü uzaklaştırma potansiyeli denge, kinetik ve termodinamik parametreler açısından incelenmiştir. Metilen mavisinin uzaklaştırılmasında Langmuir izoterm modelinden elde edilen maksimum adsorplama kapasitesi 62,50 mg g-1 olarak tespit edilmiştir. Bazı deneysel parametrelerin İSATAÇ üzerinde Metilen Mavisi adsorpsiyonuna etkileri göz önüne alınarak Yapay Sinir Ağı (YSA) modeli geliştirilmiş ve İSATAÇ’ın atık sulardan organik kirleticilerin uzaklaştırılmasında kullanılabileceği sonucuna varılmıştır.
AtıfOpenAlex4TR Dizin3İncele - MakaleAçık Erişim2020The Reactions of Customers in Turkey Towards Load Shifting Based Demand Side Management in Smart Grids
Cakmak, Recep; Altas, Ismail Hakki
Technical studies on smart grids have been underway all over the world and in Turkey. One of the most important features that distinguishes the smart grids from conventional electrical grids the distributed generation structure of the smart grids. Therefore, demand side management (DSM) studies are one of the prominent research topics in today’s power distribution networks. In the smart grids, “consumption follows generation” paradigm is adopted by means of DSM instead of the “generation follows consumption” paradigm in conventional electrical grids. While progressing technical and academic studies on the smart grid and demand-side management, it is important to investigate the perspective of consumers, who are one of the important stakeholders in the implementation phase of the smart grids. In this study, reactions and attitudes of customers in Turkey towards load shifting based demand side management in the smart grids are presented using results of a public survey, which is implemented in Istanbul. The presented results are obtained through statistical frequency analysis of the public survey data. The findings would contribute to the development of the smart grid studies and demand-side management policies in Turkey.
AtıfOpenAlex5İncele - MakaleAçık Erişim2019A Generic Circuit Model for Memristor-Based One Diode-One Resistor Devices
Gül, F.
Memristor-based resistive random access memory (RRAM) devices are very good competitors for next generation non-volatile crossbar memory applications. The sneak paths problem is one of the main constraints in fabricating crossbar memory devices. The one diode-one resistor (1D1R) structure design is effective for suppressing the sneak paths problem. Suitable circuit models are needed to simulate semiconductor structures.Ageneral circuit model for memristor-based one diode-one resistor structures is proposed in this work. The Simulation Program with Integrated Circuit Emphasis (SPICE) environment was used to simulate the designed circuit. Well-known mathematical models such as those of Strukov, Biolek, Joglekar, Prodromakis and Zha were used to simulate the memristor component of the circuit. The current-voltage characteristics were obtained for different mathematical models. All results were compatible with the expected characteristics. The best fit characteristics were acquired using the Zha and Strukov models.
AtıfOpenAlex3İncele - MakaleAçık Erişim2019Classification of Historical Anatolian Coins with Machine Learning Algorithms
Ünlü, Ramazan
To find out which period the historical coins belong to requires a number of scientific procedures that archaeologists or expertscan do. These operations can often be time-consuming and demanding operations. From this point on, in this study, theautomatically classification of historical coins by using machine learning methods is discussed. Being able to use machine learningmethods to classify historical coins can help experts and can become an analysis tool without the need for scientific tests fornon-experts. For this purpose, some physical properties of different coins used in Anatolian geography were collected andclassified by various machine learning methods named SVM, Random Forest, Bagging, and Decision Trees. Also, two differentmissing values strategies are deployed in conjunction with each chosen method. Based on our findings, random forest methodtogether with imputing missing values with mean gives an acceptable results with the accuracy rate of %71, although there aresome limitations such as high rate of missing values and working with a small dataset
AtıfOpenAlex5TR Dizin1İncele - MakaleAçık Erişim2019Dynamic Modeling and Simulation of Quadrotor for Different Flight Conditions
Oktay, Tugrul; Kose, Oguz
In this paper, a four-rotor unmanned aerial vehicle was modeled, a control system was designed and performance evaluations weremade. For the control system, a separate mathematical model of the unmanned aerial vehicle longitudinal, lateral and vertical take-offand landing operations is omitted and is expressed as a state space model. The mathematical model of the wind disturbances that willaffect the unmanned aerial vehicle during the flight was created and the situation was added to the space model. Proportional IntegralDerivative (PID) control algorithm was used as the control. Unmanned aerial vehicle modeling was done in Solidworks andsimulations were done in Matlab / Simulink program.
AtıfOpenAlex16TR Dizin7İncele